.page-header-theme {
    padding: 3rem 0 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-header-theme p {
    font-size: .75rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--red);
    font-weight: 600;
    margin-bottom: .5rem;
}
.page-header-theme h1 {
    color: var(--green);
    font-size: clamp(2rem, 5vw, 3.2rem);
    margin: 0;
    font-weight: 700;
}


.theme-content p {
    font-size: 1.1rem;
    max-width: 900px;
    margin: 0 auto 15px auto;
}

/* ── Expert contribution block ── */
.expert-contribution {
  border: 1px solid var(--border);
  border-top: 4px solid var(--red);
  border-radius: 0 0 12px 12px;
  overflow: hidden;
  margin-bottom: 2.5rem;
}

.expert-contribution-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: #faf7f7;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.expert-contribution-body {
  padding: 1.4rem 1.75rem;
  background: var(--card-bg);
  font-size: .975rem;
  line-height: 1.75;
}

.expert-contribution-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 480px) {
  .expert-contribution-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .expert-contribution-body {
    padding: 1.1rem 1.25rem;
  }
}

.expert-intro {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--red);
  border-radius: 0 12px 12px 0;
  padding: 1.1rem 1.5rem;
  margin-bottom: 1.5rem;
}

.expert-intro-photo {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--orange);
}

.expert-intro-info {
  display: flex;
  flex-direction: column;
  gap: .15rem;
}

.expert-intro-label {
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--green);
  font-weight: 600;
}

.expert-intro-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark-blue);
  margin: 0;
  line-height: 1.3;
}

.expert-intro-affil {
  font-size: .85rem;
  color: var(--muted);
}

.expert-intro-topic {
  font-size: .85rem;
  color: var(--text);
  font-style: italic;
}

@media (max-width: 480px) {
  .expert-intro {
    flex-direction: column;
    align-items: flex-start;
    border-left: 4px solid var(--red);
    border-radius: 0 8px 8px 0;
  }
}